NEET 2019 Odisha · BiologyPrevious Year Question
In a marriage between male with blood group A and female with blood group B, the progeny had either blood group AB or B. What could be the possible genotype of parents?
Answer: (A) IAi (Male) : IBIB (Female). Answer: (A) IAi (Male) : IBIB (Female) Solution: For progeny to be either AB (IAIB) or B, the cross must give only these two phenotypes.
- A.IAi (Male) : IBIB (Female)✓
- B.IAIA (Male) : IBIB (Female)
- C.IAIA (Male) : IBi (Female)
- D.IAi (Male) : IBi (Female)
Correct Answer
(A) IAi (Male) : IBIB (Female)
Solution & Explanation
Answer: (A) IAi (Male) : IBIB (Female) Solution: For progeny to be either AB (IAIB) or B, the cross must give only these two phenotypes. IAi (A father) x IBIB (B mother) produces IAIB (AB) and IBi (B) in 1:1, matching the requirement. The other combinations would produce A or O offspring as well, which were not observed. NCERT Reference: NCERT Class XII, Ch 4, p.61, lines 022-023: "each person possesses any two of the three I gene alleles. IA and IB are completely dominant over i"
🎯
43,000+ questions in हिंदी & English · one-tap toggle
Open →📚Practice all NEET Biology PYQs chapter-wise →💡Don't get it? Learn the Principles of Inheritance and Variation concepts →Practice NEET 2019 Odisha Biology — free, with instant solutions
43,000+ NEET questions solved step-by-step, chapter-wise, in the MedicNEET app.
More NEET PYQ solutions
BiolWhich one of the following is an example of ex-situ conservation?BiolWhich of the following is an example of a zygomorphic flower? (NEET 2025)BiolWhich of the following is an example of actinomorphic flower? (NEET 2024)BiolIn the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called : (NEET 2025)BiolGiven below are two statements: Statement I : In a floral formula the symbol [percentage/division-type symbol] stands for zygomorphic nature of the flower, and G with a bar above it stands for inferior ovary. Statement II : In a floral formula the symbol [same symbol] stands for actinomorphic nature of the flower and G with a bar below it stands for superior ovary. In the light of the above statements, choose the correct answer from the options given below: (NEET 2025)BiolMatch List I with List II: List I — A. Scutellum; B. Non-albuminous seed; C. Epiblast; D. Perisperm. List II — I. Persistent nucellus; II. Cotyledon of Monocot seed; III. Groundnut; IV. Rudimentary cotyledon. Choose the option with all correct matches. (NEET 2025)BiolGiven below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence. A. Prothallus stage B. Meiosis in spore mother cells C. Fertilisation D. Formation of archegonia and antheridia in gametophyte. E. Transfer of antherozoids to the archegonia in presence of water. Choose the correct answer from the options given below:BiolThe correct sequence of events in the life cycle of bryophytes is A. Fusion of antherozoid with egg. B. Attachment of gametophyte to substratum. C. Reduction division, to produce haploid spores. D. Formation of sporophyte. E. Release of antherozoids into water. Choose the correct answer from the options given below: